| Title | Effect of biodegradable poly-3-hydroxybutyrate amendment on the soil biochemical properties and fertility under varying sand loads |
| Publication Type | Journal Article |
| Year of Publication | 2022 |
| Authors | Brtnicky M., Pecina V., Holatko J., Hammerschmiedt T., Mustafa A., Kintl A., Fojt J., Baltazar T., Kucerik J. |
| Journal | Chemical and Biological Technologies in Agriculture |
| Volume | 9 |
| Pagination | 13 |
| Date Published | Oct |
| Type of Article | Article |
| Accession Number | WOS:000876304100002 |
| Keywords | ABUNDANCE, Agriculture, Biodegradation, community, Lettuce, microbial community, microbial-degradation, nitrogen, organic-matter, P3HB, plastics, poly(3-hydroxybutyrate), poly-beta-hydroxybutyrate, rape, respiration, Soil quality deterioration |
| Abstract | Background: Poly-3-hydroxybutyrate (P3HB) is a bacterial intracellular carbon and energy storage polymer, used as a thermoplastic polyester in a wide array of industrial and agricultural applications. However, how the soil microbiome and fertility are altered by exogenously applied P3HB has been relatively unexplored. This study aimed to assess the effects of P3HB addition to nutrient restricted soil: its biological properties and lettuce (Lactuca sativa L. var. capitata L.) biomass production. The experiment was designed to evaluate impacts of spatial arrangement of the relatively organic-rich (soil organic matter, P3HB particles) versus poor fractions of the matrix with confounding factors such as variable microbial biomass, inherent nutrient/energy status, different water relations (due to variable hydrophysical properties of soil augmented by sand at different ratios). Results: The results revealed that P3HB in soils induced inconsistent to contradictory changes in the microbial abundance as well as in most enzymatic activities. The differences were conditioned by the sand content both under P3HB presence or absence. On the other hand, dehydrogenase, urease activities, basal and substrate-induced soil respirations were mostly enhanced by P3HB addition, directly with increasing sand content (several respiration types). Nevertheless, P3HB significantly inhibited lettuce biomass production. Conclusions: P3HB introduction to soil boosts the microbial activity owing to the preferential utilization of P3HB as C source, which depletes soil N and strongly inhibits the plant growth. Enhanced microbial activity in P3HB-amended soils with high sand content (60-80%) suggested that in nutrient-impoverished soil P3HB can temporarily replace SOM as a C source for microbial communities due to the shift of their structure to preferentially P3HB-degrading microbiome.
|
| Alternate Journal | Chem. Biol. Technol. Agric. |
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Brtnicky, M. Pecina, V Holatko, J. Hammerschmiedt, T. Mustafa, A. Kintl, A. Fojt, J. Baltazar, T. Kucerik, J.
Kintl, Antonin/AAJ-3773-2021
Kintl, Antonin/0000-0002-0031-083X
Ministry of Education, Youth and Sports of the Czech Republic, project Kvalitni interni Granty VUT [EF19_073/0016948, FCH-S-22-8001]; Ministry of Agriculture of the Czech Republic [MZE-RO1218, MZE-RO1722]
The work was supported by the Ministry of Education, Youth and Sports of the Czech Republic, project Kvalitni interni Granty VUT EF19_073/0016948 and project FCH-S-22-8001 and by the Ministry of Agriculture of the Czech Republic, institutional support MZE-RO1218 and MZE-RO1722.
4
Springer
New york
2196-5641
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